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/*****************************************************************************
* Copyright (C) 2013-2020 MulticoreWare, Inc
*
* Authors: Peixuan Zhang <zhangpeixuancn@gmail.com>
* Chunli Zhang <chunli@multicorewareinc.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at license @ x265.com.
*****************************************************************************/
#include "common.h"
#include "reconplay.h"
#include <signal.h>
using namespace X265_NS;
#if _WIN32
#define popen _popen
#define pclose _pclose
#define pipemode "wb"
#else
#define pipemode "w"
#endif
bool ReconPlay::pipeValid;
#ifndef _WIN32
static void sigpipe_handler(int)
{
if (ReconPlay::pipeValid)
general_log(NULL, "exec", X265_LOG_ERROR, "pipe closed\n");
ReconPlay::pipeValid = false;
}
#endif
ReconPlay::ReconPlay(const char* commandLine, x265_param& param)
{
#ifndef _WIN32
if (signal(SIGPIPE, sigpipe_handler) == SIG_ERR)
general_log(¶m, "exec", X265_LOG_ERROR, "Unable to register SIGPIPE handler: %s\n", strerror(errno));
#endif
width = param.sourceWidth;
height = param.sourceHeight;
colorSpace = param.internalCsp;
frameSize = 0;
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
frameSize += (uint32_t)((width >> x265_cli_csps[colorSpace].width[i]) * (height >> x265_cli_csps[colorSpace].height[i]));
for (int i = 0; i < RECON_BUF_SIZE; i++)
{
poc[i] = -1;
CHECKED_MALLOC(frameData[i], pixel, frameSize);
}
outputPipe = popen(commandLine, pipemode);
if (outputPipe)
{
const char* csp = (colorSpace >= X265_CSP_I444) ? "444" : (colorSpace >= X265_CSP_I422) ? "422" : "420";
const char* depth = (param.internalBitDepth == 10) ? "p10" : "";
fprintf(outputPipe, "YUV4MPEG2 W%d H%d F%d:%d Ip C%s%s\n", width, height, param.fpsNum, param.fpsDenom, csp, depth);
pipeValid = true;
threadActive = true;
start();
return;
}
else
general_log(¶m, "exec", X265_LOG_ERROR, "popen(%s) failed\n", commandLine);
fail:
threadActive = false;
}
ReconPlay::~ReconPlay()
{
if (threadActive)
{
threadActive = false;
writeCount.poke();
stop();
}
if (outputPipe)
pclose(outputPipe);
for (int i = 0; i < RECON_BUF_SIZE; i++)
X265_FREE(frameData[i]);
}
bool ReconPlay::writePicture(const x265_picture& pic)
{
if (!threadActive || !pipeValid)
return false;
int written = writeCount.get();
int read = readCount.get();
int currentCursor = pic.poc % RECON_BUF_SIZE;
/* TODO: it's probably better to drop recon pictures when the ring buffer is
* backed up on the display app */
while (written - read > RECON_BUF_SIZE - 2 || poc[currentCursor] != -1)
{
read = readCount.waitForChange(read);
if (!threadActive)
return false;
}
X265_CHECK(pic.colorSpace == colorSpace, "invalid color space\n");
X265_CHECK(pic.bitDepth == X265_DEPTH, "invalid bit depth\n");
pixel* buf = frameData[currentCursor];
for (int i = 0; i < x265_cli_csps[colorSpace].planes; i++)
{
char* src = (char*)pic.planes[i];
int pwidth = width >> x265_cli_csps[colorSpace].width[i];
for (int h = 0; h < height >> x265_cli_csps[colorSpace].height[i]; h++)
{
memcpy(buf, src, pwidth * sizeof(pixel));
src += pic.stride[i];
buf += pwidth;
}
}
poc[currentCursor] = pic.poc;
writeCount.incr();
return true;
}
void ReconPlay::threadMain()
{
THREAD_NAME("ReconPlayOutput", 0);
do
{
/* extract the next output picture in display order and write to pipe */
if (!outputFrame())
break;
}
while (threadActive);
threadActive = false;
readCount.poke();
}
bool ReconPlay::outputFrame()
{
int written = writeCount.get();
int read = readCount.get();
int currentCursor = read % RECON_BUF_SIZE;
while (poc[currentCursor] != read)
{
written = writeCount.waitForChange(written);
if (!threadActive)
return false;
}
char* buf = (char*)frameData[currentCursor];
intptr_t remainSize = frameSize * sizeof(pixel);
fprintf(outputPipe, "FRAME\n");
while (remainSize > 0)
{
intptr_t retCount = (intptr_t)fwrite(buf, sizeof(char), remainSize, outputPipe);
if (retCount < 0 || !pipeValid)
/* pipe failure, stop writing and start dropping recon pictures */
return false;
buf += retCount;
remainSize -= retCount;
}
poc[currentCursor] = -1;
readCount.incr();
return true;
}
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